Bar Graph Statistics Example 2

Follow the full solution, then compare it with the other examples linked below.

Example 2

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A bar graph shows book genres read by students: Fiction (12), Non-fiction (8), Mystery (10), Sci-fi (6), Biography (4). How many students were surveyed in total, and what fraction chose Mystery?

Solution

  1. 1
    Step 1: Read the bar graph and add all frequencies to find the total number of students: 12+8+10+6+4=4012 + 8 + 10 + 6 + 4 = 40
  2. 2
    Step 2: Identify the frequency for the Mystery genre: 10 students chose Mystery.
  3. 3
    Step 3: Calculate the fraction: 1040=14\frac{10}{40} = \frac{1}{4} of students chose Mystery.

Answer

40 students were surveyed; 14\frac{1}{4} chose Mystery.
Bar graphs allow us to read off exact frequencies for each category. We can compute totals and proportions directly from the bar heights.

About Bar Graph

A bar graph is a chart that uses rectangular bars of different heights or lengths to compare quantities across distinct categories. Each bar represents one category, and the bar's length is proportional to the value it represents.

Learn more about Bar Graph →

More Bar Graph Examples

Example 1 easy

The favourite fruits of 20 students are: Apple (7), Banana (5), Orange (4), Grape (4). Draw a bar gr

Example 3 easy

A bar graph shows the number of rainy days in four months: Jan (10), Feb (7), Mar (5), Apr (8). Whic

Example 4 easy

A bar graph shows votes for class captain: Maya 18, Leo 12, Sam 15, and Priya 9. How many votes were

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